Piping > Pipeline Modification > Modifying Pipe Options > Resolving a Failed Regeneration
  
Resolving a Failed Regeneration
Sometimes changes you make to pipelines conflict with other geometry or feature parameters. As a result, your attempt to regenerate the assembly may fail.
When a regeneration fails, you must resolve the problem before continuing with normal model processing. To facilitate this, Creo Parametric provides a special error resolution environment, that is, the Resolve environment to help you correct the problem.
All Piping processing resides in Assembly mode, therefore, follow the Assembly mode recovery procedure. All assembly functionality is available to repair the model.
For example, if the failure lies in the creation or modification of a solid pipe, you can repair the underlying pipe routing feature using Piping functionality.